Inkjet printing apparatus

Abstract

An inkjet printing apparatus includes an inkjet head that moves in a main scanning direction at the time of printing; a filter chamber provided on a path for supplying ink to a nozzle hole (nozzle) in the inkjet head; and a spherical body placed on a head filter in the filter chamber. The spherical body has a diameter φ larger than the mesh of the head filter. The spherical body is disposed on the head filter so as to be rollable by the movement of the inkjet head.

What is claimed is: 
     
       1. An inkjet printing apparatus comprising:
 an inkjet head that moves in a scanning direction at a time of printing; 
 a filter chamber provided on a path for supplying ink to a nozzle in the inkjet head; and 
 a rolling element placed on a filter in the filter chamber; wherein 
 the rolling element has a diameter larger than a mesh of the filter; and 
 the rolling element is disposed so as to be rollable on the filter in the scanning direction by movement of the inkjet head. 
 
     
     
       2. The inkjet printing apparatus according to  claim 1 , wherein the rolling element is a spherical body made of a nonmagnetic metal material. 
     
     
       3. The inkjet printing apparatus according to  claim 2 , wherein
 the spherical body is placed in plurals on the filter; and 
 a ratio of projection areas of the spherical bodies with respect to an area of the filter is greater than or equal to 3% and less than or equal to 30%. 
 
     
     
       4. The inkjet printing apparatus according to  claim 3 , wherein the ink is an ultraviolet curable ink. 
     
     
       5. The inkjet printing apparatus according to  claim 3 , wherein the ink is a support material ink used for three-dimensional shaping. 
     
     
       6. The inkjet printing apparatus according to  claim 2 , wherein
 the spherical body is placed in plurals on the filter; and 
 a ratio of projection areas of the spherical bodies with respect to the filter is ⅓ to 1/30 of an area of the filter. 
 
     
     
       7. The inkjet printing apparatus according to  claim 6 , wherein the ink is an ultraviolet curable ink. 
     
     
       8. The inkjet printing apparatus according to  claim 6 , wherein the ink is a support material ink used for three-dimensional shaping. 
     
     
       9. The inkjet printing apparatus according to  claim 2 , wherein the ink is an ultraviolet curable ink. 
     
     
       10. The inkjet printing apparatus according to  claim 2 , wherein the ink is a support material ink used for three-dimensional shaping. 
     
     
       11. The inkjet printing apparatus according to  claim 1 , wherein the ink is an ultraviolet curable ink. 
     
     
       12. The inkjet printing apparatus according to  claim 11 , wherein the ink is a support material ink used for three-dimensional shaping. 
     
     
       13. The inkjet printing apparatus according to  claim 1 , wherein the ink is a support material ink used for three-dimensional shaping. 
     
     
       14. An inkjet printing apparatus comprising:
 an inkjet head that moves in a scanning direction at a time of printing; 
 a filter chamber provided on a path for supplying ink to a nozzle in the inkjet head; and 
 a rolling element placed on a filter in the filter chamber; wherein 
 the rolling element has a diameter larger than a mesh of the filter, 
 the rolling element is disposed on the filter so as to be rollable by movement of the inkjet head, 
 the rolling element is placed in plurals on the filter, and 
 a ratio of projection areas of the rolling elements with respect to an area of the filter is greater than or equal to 3% and less than or equal to 30%.